/Engine/Plugins/Animation/IKRig/Source/IKRigEditor/Public/RigEditor/IKRigController.h
Sets the preview mesh to use. Loads the hierarchy into the asset's IKRigSkeleton. Returns true if the mesh was able to be set. False if it was incompatible for any reason.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, BlueprintPure=false, Category=IKRig) bool SetSkeletalMesh ( [USkeletalMesh](API\Runtime\Engine\Engine\USkeletalMesh) * SkeletalMesh, bool bTransact ) const